Clinical depression is a mood disorder that causes people to lose interest in things they once loved. People with depression often feel hopeless and anxious. And make no mistake - depression can happen to anyone, regardless of their age or gender.

Some of the most common symptoms of depression include:

Increased anxiety

Poor concentration

Sadness

Loss of energy

Problems sleeping

Loss of interest

Feel helpless or hopeless

Decreased self-worth

Poor or increased appetite

Avoiding people, even family or close friends

Difficulty functioning at school or work

Increased guilt

Physical pains

Decreased libido

Thoughts of suicide or death

Self-harming

If you experience four or more of these symptoms throughout most of the day for two weeks in a row, it's time to talk to your doctor about whether you are suffering from depression.

The Types of Depression

Depression can manifest itself in many different forms.

Mild depression

While symptoms may be less intense, those with mild depression may still experience a negative impact on their daily life. You may find it difficult to sleep, or have trouble concentrating at work.

Major depression

Those with major depression experience intense symptoms that affect most aspects of their daily lives. While some people may only experience one episode of major depression, many with the disorder will experience several episodes over the course of their life.

Bipolar disorder

This mood disorder is characterized by extreme highs, where a person may feel intensely happy and indestructible, with periods of extreme lows, in which a person may feel worthless, hopeless or suicidal.

Seasonal Affective Disorder (SAD)

Sometimes referred to as the 'winter blues', symptoms of Seasonal Affective Disorder usually start during the winter months and can last until spring. This form of depression can affect not only mood, but also eating and sleeping habits.

Postpartum depression

While many new mothers may feel anxious and overwhelmed at some point after giving birth, some women experience severe and almost debilitating depression that begins after giving birth.

Depression can be complex and debilitating, but taking action is the first step to getting better. Talk to your general practitioner about treatment options and ways to cope. There are many medical and non-medical options to help control your depressive symptoms.